New energy automobile battery heat insulation plate structure and processing method thereof

Abstract

This invention relates to the field of heat insulation technology for new energy vehicle batteries, and more particularly to a heat insulation plate structure and its processing method for new energy vehicle batteries. The structure includes a main board and an aerogel pad. The aerogel pad is fixedly connected to the inner side of the main board, and the main boards are connected by connectors. A control mechanism is provided between the connectors on both sides, and a vacuum mechanism is installed between the aerogel pads. The connectors include a first cylinder, with a guide rod fixedly connected to one end. The guide rod is slidably connected inside the cylinder tube by a telescopic spring. A second cylinder is welded and fixed to the other end of the cylinder tube. Positioning plates are fixedly connected to the tops of both the first and second cylinders. This invention allows the heat insulation pad to have high flexibility in practical applications, enabling it to fit tightly against the battery. It also provides stable support during this process, exhibiting excellent resistance to pressure deformation. Furthermore, the entire structure is produced using an assembly method, making it easy to process.

Description

Technical Field

[0001] This invention relates to the field of heat insulation technology for new energy vehicle batteries, specifically to a heat insulation plate structure for new energy vehicle batteries and its processing method. Background Technology

[0002] A battery heat shield for new energy vehicles is a component specifically designed to isolate the battery from heat exchange with its surrounding environment, thereby protecting the battery from operating within a suitable temperature range. Since batteries in new energy vehicles (especially electric vehicles) generate heat during charging and discharging, improper temperatures may affect battery performance, lifespan, and even safety. Therefore, the role of the battery heat shield is crucial.

[0003] Materials with irregular porous structures can reduce their thermal conductivity by insulating against heat transfer to some extent due to the presence of air or other gases within their pores. Additionally, materials that reflect heat away through their own material properties can also reduce their thermal conductivity, such as gold, silver, nickel, and aluminum foil. Vacuum insulation materials utilize the internal vacuum of the material to block convection and thus provide insulation. Aerogels are a new type of insulation material and are currently known to have the best insulation performance.

[0004] Many thermal insulation materials are available on the market, but they are not suitable for application in the field of new energy battery thermal insulation. For example, porous foam thermal insulation materials are prone to deformation and cannot withstand the pre-tightening force during battery installation to maintain their original shape; vacuum thermal insulation materials require a certain structure to form a vacuum layer for thermal insulation, which cannot be achieved between the gaps in new energy vehicle batteries; existing heat-reflective thermal insulation materials are mainly metal-based, which cannot meet the insulation performance requirements; aerogel thermal insulation materials have excellent performance in all aspects, but they also have a thermal insulation effect at low temperatures, which contradicts the requirement that new energy batteries should not affect battery heat dissipation at low temperatures, and therefore do not meet the requirements. Therefore, to address the above problems, a thermal insulation plate structure for new energy vehicle batteries and its processing method are proposed. Summary of the Invention

[0005] The purpose of this invention is to provide a heat insulation plate structure for new energy vehicle batteries and its processing method, in order to solve the problem that many heat insulation materials on the market are not suitable for widespread application in the field of new energy battery heat insulation. For example, porous foam heat insulation materials are prone to deformation and cannot withstand the pre-tightening force during battery installation to maintain their original shape; vacuum heat insulation materials require a certain structure to form a vacuum layer for heat insulation, which cannot be achieved between the gaps in new energy vehicle batteries; existing heat-reflective heat insulation materials are mainly metal-based, which cannot meet the insulation performance requirements; aerogel heat insulation materials have excellent performance in all aspects, but they also have a heat insulation effect at low temperatures, which contradicts the requirement of new energy batteries to not affect battery heat dissipation at low temperatures, and therefore do not meet the requirements.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A heat insulation plate structure for a new energy vehicle battery and its processing method are disclosed, comprising a main board and an aerogel pad. The aerogel pad is fixedly connected to the inner side of the main board. The main boards are connected to each other via connectors. A control mechanism is provided between the connectors on both sides. A vacuum mechanism is installed between the aerogel pads. The connectors include a first cylinder, one end of which is fixedly connected to a guide rod. The guide rod is slidably connected to the inside of the cylinder tube via a telescopic spring. A second cylinder is welded and fixed to the other end of the cylinder. Positioning plates are fixedly connected to the tops of both the first and second cylinders. Positioning grooves are formed inside the positioning plates. The control mechanism includes a control rod. Bidirectional inclined blocks are fixedly connected to both sides of the top and bottom of the control rod. Positioning components are fixedly connected to both sides of the middle of the control rod. The positioning components include a square plate. A central square hole is formed on the inner side of the square plate. A sliding groove is formed in the middle of the central square hole. A slider is slidably connected to the central square hole via the sliding groove. Blind holes are formed on the inner sides of both ends of the slider. Cylindrical rods are slidably connected inside the blind holes. The bidirectional inclined blocks are tightly attached to the positioning plate via the positioning grooves.

[0008] As a further optimization of the present invention, six connectors are provided, with no positioning plate provided inside the upper connector. The connectors are parallel to each other, and the first cylinder, guide rod, second cylinder, and column tube provided inside any connector are on the same axis.

[0009] As a further optimization of the present invention, the interior of the column tube is hollowed out, one end of the telescopic spring is fixedly connected to the guide rod, the other end of the telescopic spring is fixedly connected to the second cylinder, and the positioning plate is installed on the end face of the first cylinder and the second cylinder near the telescopic spring.

[0010] As a further optimization of the present invention, the motherboard includes a board body, the board body has a connection hole inside, there are two motherboards, the motherboards are parallel to each other, and the connection holes inside the two motherboards are respectively fixedly connected to the first cylinder and the second cylinder.

[0011] As a further optimization of the present invention, the motherboard is installed between the batteries inside the battery pack, and the bottom of the battery pack is provided with a protrusion for positioning the motherboard, the protrusion being positioned between the two motherboards.

[0012] As a further optimization of the present invention, the aerogel pads are provided in two, and the aerogel pads correspond one-to-one with the main board. The inner edge of the aerogel pads is provided with circular holes for the passage of the first cylinder, the second cylinder and the cylindrical rod.

[0013] As a further optimization of the present invention, the control bend rod is U-shaped and is disposed between the aerogel pads; the vertical cross-section of the bidirectional inclined block is trapezoidal; there are four bidirectional inclined blocks; and the bidirectional inclined blocks correspond one-to-one with the connecting parts disposed on both sides.

[0014] As a further optimization of the present invention, the central square hole is connected to the slide groove, the vertical projection of the slider is set in a "+" shape, the included angle between the cylindrical rod and the slide groove is 90°, two cylindrical rods are provided for sliding connection inside any slider, the end of the cylindrical rod away from the center point of the slider passes through the aerogel pad and is fixedly connected to the main board, and the included angle between the cylindrical rod and the main board is 90°.

[0015] As a further optimization of the present invention, the vacuum mechanism includes a first frame plate, a second frame plate is slidably connected inside the first frame plate, and one end of the first frame plate and the second frame plate are respectively fixedly connected to the aerogel pad.

[0016] As a further optimization of the present invention, the following steps are included: Step I: Fixing the plate and the aerogel pad: Install the aerogel pad inside the plate. During the installation process, it is important to ensure that the edge of the aerogel pad is inside the plate. In the process of fixing the aerogel pad to the plate, first bond the aerogel pad to the plate with an adhesive, and then reinforce it mechanically with rivets. The fixed connection between the aerogel pad and the plate is achieved by combining adhesive and mechanical fixing.

[0017] At the same time, the first frame plate and the second frame plate are connected to the aerogel pad respectively. The fixing is achieved by a combination of adhesive and mechanical fixation. All the above rivets are installed at the edge. After installation, the plate and the aerogel pad are punched at the same time. The punching position should avoid contact with the rivets to prevent damage to the stamping equipment, so as to be used for the installation and positioning of the connectors and control mechanism.

[0018] Step II: Install the connector and control mechanism between the mainboard: Connect the connector and control mechanism to the plate with the fixed aerogel pad. During the connection process, the connector is connected to the plates on both sides through the first cylinder and the second cylinder respectively through the connection holes. The first cylinder and the second cylinder are connected to the connection holes by interference fit. During the connection process, glue is applied inside the connection holes. The cylindrical rod is connected to the plates on both sides at the same time. The connection between the cylindrical rod and the plates on both sides is achieved by welding to fix it, so as to achieve the positioning of the control mechanism.

[0019] During the above connection process, the first frame plate and the second frame plate are connected simultaneously;

[0020] Step III: Motherboard Compression Test: After the connection is completed, the motherboards are compressed to test the stability of the connection between the motherboards, as well as the installation stability of the connectors and control mechanisms. During the test, the various components inside the device that need to be displaced should be able to move flexibly.

[0021] Compared with the prior art, the beneficial effects of the present invention are:

[0022] 1. In this invention, the main board, connectors, aerogel pad, control mechanism and vacuum mechanism can make the heat insulation pad have high flexibility in actual application, so that it can be closely attached to the battery. At the same time, it can provide stable support during the close attachment to the battery, and has excellent anti-compression deformation performance. Moreover, the whole is produced by assembly, which is easy to process.

[0023] 2. In this invention, the connectors and control mechanisms are adapted to a specific battery pack, enabling precise positioning and installation. After installation, the connectors automatically fit snugly against the side of the battery pack, ensuring the overall stability of the battery pack after installation.

[0024] 3. In this invention, by setting up a vacuum mechanism and aerogel pad, by increasing the heat insulation material between the mainboards, and by using air as a medium for isolation, the overall heat insulation effect of the heat insulation board can be improved. In actual application, the material can also play a good role in heat insulation, flame retardancy and support when a single battery pack fails and the temperature rises sharply, so as to ensure the safe use of adjacent batteries. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 This is a schematic diagram of the aerogel pad installation location structure of the present invention;

[0027] Figure 3 For the present invention Figure 2 Schematic diagram of the structure at point A in the middle;

[0028] Figure 4 This is a schematic diagram of the motherboard structure of the present invention;

[0029] Figure 5 This is a schematic diagram of the aerogel pad structure of the present invention;

[0030] Figure 6 This is a schematic diagram of the control mechanism structure of the present invention;

[0031] Figure 7 For the present invention Figure 6 Schematic diagram of the structure at point B;

[0032] Figure 8 For the present invention Figure 6 Schematic diagram of the structure at point C;

[0033] Figure 9 This is a schematic diagram of the positioning component structure of the present invention;

[0034] Figure 10 This is a schematic diagram of the slider structure of the present invention;

[0035] Figure 11 This is a schematic diagram of the connector structure of the present invention.

[0036] In the diagram: 1. Motherboard; 11. Board body; 12. Connecting holes;

[0037] 2. Connector; 21. First cylinder; 22. Guide rod; 23. Second cylinder; 24. Column tube; 25. Telescopic spring; 26. Positioning plate; 27. Positioning groove;

[0038] 3. Aerogel pad;

[0039] 4. Control mechanism; 41. Control rod; 42. Bidirectional inclined block; 43. Positioning component; 431. Square plate; 432. Central square hole; 433. Slide groove; 434. Sliding block; 435. Blind hole; 436. Cylindrical rod;

[0040] 5. Vacuum mechanism; 51. First frame plate; 52. Second frame plate. Detailed Implementation

[0041] Please see Figure 1-11 The present invention provides a technical solution:

[0042] A heat insulation plate structure for a new energy vehicle battery and its processing method include a main board 1 and an aerogel pad 3. The aerogel pad 3 is fixedly connected to the inner side of the main board 1. The main boards 1 are connected by connectors 2. A control mechanism 4 is provided between the two connectors 2. A vacuum mechanism 5 is installed between the aerogel pads 3. The connector 2 includes a first cylinder 21. A guide rod 22 is fixedly connected to one end of the first cylinder 21. The guide rod 22 is slidably connected to the inside of a column tube 24 by a telescopic spring 25. A second cylinder 23 is welded and fixed to the other end of the column tube 24. Positioning plates 26 are fixedly connected to the top of both the first cylinder 21 and the second cylinder 23. The positioning plates 26 are open inside. The control mechanism 4 includes a control rod 41, with bidirectional inclined blocks 42 fixedly connected to both the top and bottom ends of the control rod 41. Positioning components 43 are fixedly connected to both sides of the middle of the control rod 41. The positioning component 43 includes a square plate 431, with a central square hole 432 on the inner side of the square plate 431. A sliding groove 433 is opened in the middle of the central square hole 432. A slider 434 is slidably connected inside the central square hole 432 through the sliding groove 433. Blind holes 435 are opened on the inner sides of both ends of the slider 434. A cylindrical rod 436 is slidably connected inside the blind holes 435. The bidirectional inclined blocks 42 are tightly attached to the positioning plate 26 through the positioning groove 27.

[0043] As a further implementation of this solution, there are six connectors 2. The upper connector 2 is installed inside without a positioning plate 26. The connectors 2 are parallel to each other. The first cylinder 21, guide rod 22, second cylinder 23 and column tube 24 inside any connector 2 are on the same axis. Through the above-mentioned six connectors 2, the main boards 1 can be stably connected.

[0044] As a further implementation of this solution, the inside of the column tube 24 is hollowed out. One end of the telescopic spring 25 is fixedly connected to the guide rod 22, and the other end of the telescopic spring 25 is fixedly connected to the second cylinder 23. The positioning plate 26 is installed on the end face of the first cylinder 21 and the second cylinder 23 near the telescopic spring 25. Through the above arrangement, the stability of the connection between the guide rod 22 and the column tube 24 can be further improved.

[0045] As a further implementation of this solution, the motherboard 1 includes a board body 11, and a connection hole 12 is provided inside the board body 11. There are two motherboards 1, which are parallel to each other. The connection hole 12 provided inside the two motherboards 1 are fixedly connected to the first cylinder 21 and the second cylinder 23 respectively. The connector 2 can be positioned through the connection hole 12 provided inside the two boards 11.

[0046] As a further implementation of this solution, the main board 1 is installed between the batteries inside the battery pack. The bottom of the battery pack is provided with a protrusion plate for positioning the main board 1. The protrusion plate is located between the two main boards 1. Through the above settings, the stability and safety of the heat insulation plate installed inside the battery pack can be further improved.

[0047] As a further implementation of this solution, two aerogel pads 3 are provided, and the aerogel pads 3 correspond one-to-one with the main board 1. The inner edge of the aerogel pad 3 is provided with a circular hole for the first cylinder 21, the second cylinder 23 and the cylindrical rod 436 to pass through. Through the above setting, the stability of the connection between the first cylinder 21, the second cylinder 23 and the cylindrical rod 436 and the aerogel pad 3 can be improved.

[0048] As a further implementation of this solution, the control rod 41 is U-shaped and is set between the aerogel pads 3. The vertical section of the bidirectional inclined block 42 is trapezoidal and there are four bidirectional inclined blocks 42. The bidirectional inclined blocks 42 correspond one-to-one with the connecting parts 2 set on both sides. Through the above settings, the distance between the first cylinder 21 and the second cylinder 23 can be controlled by the bidirectional inclined blocks 42.

[0049] As a further implementation of this solution, the central square hole 432 is connected to the slide groove 433. The vertical projection of the slider 434 is set in a "+" shape. The angle between the cylindrical rod 436 and the slide groove 433 is 90°. There are two cylindrical rods 436 that are slidably connected inside any slider 434. The end of the cylindrical rod 436 away from the center point of the slider 434 passes through the aerogel pad 3 and is fixedly connected to the main board 1. The angle between the cylindrical rod 436 and the main board 1 is 90°. Through the above settings, the overall stability of the heat insulation board structure is further improved.

[0050] As a further implementation of this solution, the vacuum mechanism 5 includes a first frame plate 51, and a second frame plate 52 is slidably connected inside the first frame plate 51. One end of the first frame plate 51 and the second frame plate 52 are respectively fixedly connected to the aerogel pad 3. Through the vacuum mechanism 5 set above, there can be a large space between the two main plates 1, which is divided by air as a medium, further improving the heat insulation effect of the heat insulation plate.

[0051] As a further implementation of this solution, the technical solution includes the following steps: Step I: Fixing the plate 11 and the aerogel pad 3: Install the aerogel pad 3 inside the plate 11. During the installation process, it is important to ensure that the edge of the aerogel pad 3 is inside the plate 11. When fixing the aerogel pad 3 to the plate 11, first bond the aerogel pad 3 to the plate 11 with an adhesive, and then reinforce it mechanically with rivets. The fixed connection between the aerogel pad 3 and the plate 11 is achieved by combining adhesive and mechanical fixing.

[0052] At the same time, the first frame plate 51 and the second frame plate 52 are connected to the aerogel pad 3 respectively. The fixing is achieved by a combination of adhesive and mechanical fixing. All the above rivets are installed at the edge. After installation, the plate 11 and the aerogel pad 3 are punched at the same time. The punching position should avoid contact with the rivets to prevent damage to the stamping equipment, so as to be used for the installation and positioning of the connector 2 and the control mechanism 4.

[0053] Step II: Install the connector 2 and control mechanism 4 between the main board 1: Connect the connector 2 and control mechanism 4 to the plate 11 with the aerogel pad 3 fixed on it. During the connection process, the connector 2 is connected to the plates 11 on both sides through the first cylinder 21 and the second cylinder 23 respectively through the connection hole 12. The first cylinder 21 and the second cylinder 23 are connected to the connection hole 12 by interference fit. During the connection process, glue is applied inside the connection hole 12. The cylindrical rod 436 is connected to the plates 11 on both sides at the same time. The connection between the cylindrical rod 436 and the plates 11 on both sides is achieved by welding to fix it, so as to achieve the positioning of the control mechanism 4.

[0054] During the above connection process, the first frame plate 51 and the second frame plate 52 are connected synchronously;

[0055] Step III: Compression Test Between Main Boards 1: After the connection is completed, the main board 1 is compressed to test the stability of the connection between the main board 1s, as well as the installation stability of the connector 2 and the control mechanism 4. During the test, the various components inside the device that need to be displaced should be able to move flexibly.

[0056] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only for the purpose of helping to understand the method and core ideas of the present invention. The above descriptions are only preferred embodiments of the present invention. It should be noted that due to the limitations of textual expression, while there are objectively infinite specific structures, those skilled in the art can make several improvements, modifications, or changes without departing from the principles of the present invention, and can also combine the above technical features in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the inventive concept and technical solution to other situations without modification, should all be considered within the scope of protection of the present invention.

Claims

1. A new energy vehicle battery heat insulation plate structure, comprising a main plate (1) and an aerogel pad (3), characterized in that: The inside of the main plate (1) is fixedly connected with aerogel pads (3), the main plate (1) is connected by connecting pieces (2), the control mechanism (4) is arranged between the connecting pieces (2) on both sides, and the aerogel pads (3) are provided with vacuum mechanisms (5); The connecting piece (2) comprises a first cylinder (21), one end of the first cylinder (21) is fixedly connected with a guide rod (22), the guide rod (22) is slidably connected in the inside of a column pipe (24) through an expansion spring (25), the other end of the column pipe (24) is welded with a second cylinder (23), the top of the first cylinder (21) and the second cylinder (23) is fixedly connected with a positioning plate (26), the inside of the positioning plate (26) is provided with a positioning inclined groove (27), the control mechanism (4) comprises a control bent rod (41), the top and the bottom of the control bent rod (41) are fixedly connected with a bidirectional inclined block (42), the middle of the control bent rod (41) is fixedly connected with a positioning piece (43) on both sides, the positioning piece (43) comprises a square plate (431), the inside of the square plate (431) is provided with a central square hole (432), the middle of the central square hole (432) is provided with a sliding groove (433), the inside of the central square hole (432) is slidably connected with a sliding block (434) through the sliding groove (433), the inside of the both ends of the sliding block (434) is provided with a blind hole (435), and the inside of the blind hole (435) is slidably connected with a cylindrical rod (436). The bidirectional inclined block (42) is tightly attached to the positioning plate (26) through the positioning inclined groove (27), the connecting piece (2) is provided with six, the inside of the connecting piece (2) is not provided with the positioning plate (26) on the upper end, the connecting pieces (2) are parallel, the first cylinder (21), the guide rod (22), the second cylinder (23) and the column pipe (24) arranged in any connecting piece (2) are coaxial, the inside of the column pipe (24) is provided with a hollow structure, one end of the expansion spring (25) is fixedly connected with the guide rod (22), the other end of the expansion spring (25) is fixedly connected with the second cylinder (23), the positioning plate (26) is installed on the end face of the first cylinder (21) and the second cylinder (23) close to the expansion spring (25), the main plate (1) comprises a plate body (11), the inside of the plate body (11) is provided with a connecting hole (12), the main plate (1) is provided with two, the main plates (1) are parallel, and the connecting holes (12) arranged in the two main plates (1) are fixedly connected between the first cylinder (21) and the second cylinder (23).

2. The new energy vehicle battery heat insulation plate structure according to claim 1, characterized in that: The main plate (1) is installed between the batteries in the battery pack, the bottom of the battery pack is provided with a raised plate for positioning the main plate (1), and the raised plate is arranged at the position between the two main plates (1).

3. The new energy vehicle battery heat insulation plate structure according to claim 1, characterized in that: The aerogel pads (3) are provided with two, the aerogel pads (3) correspond to the main plates (1) one by one, and the inside of the edge of the aerogel pad (3) is provided with a round hole for the first cylinder (21), the second cylinder (23) and the cylindrical rod (436) to pass through.

4. The new energy vehicle battery heat insulation plate structure according to claim 1, characterized in that: The control bent pole (41) is U-shaped, the control bent pole (41) is arranged between the aerogel pads (3), the vertical section of the bidirectional inclined block (42) is trapezoidal, four bidirectional inclined blocks (42) are arranged, and the bidirectional inclined blocks (42) correspond to the connecting pieces (2) arranged on the two sides one by one.

5. The new energy vehicle battery heat insulation plate structure according to claim 1, characterized in that: The center square hole (432) is communicated with the sliding groove (433), the vertical projection of the sliding block (434) is arranged in the shape of a "cross", the included angle between the cylindrical rod (436) and the sliding groove (433) is 90°, the cylindrical rod (436) slidably connected in the sliding block (434) is provided with two, one end of the cylindrical rod (436) away from the center point of the sliding block (434) penetrates the aerogel pad (3) and is fixedly connected with the main plate (1), and the included angle between the cylindrical rod (436) and the main plate (1) is 90°.

6. The new energy vehicle battery heat insulation plate structure according to claim 1, characterized in that: The vacuum mechanism (5) comprises a first frame plate (51), the second frame plate (52) is slidably connected in the first frame plate (51), and one end of the first frame plate (51) and the second frame plate (52) is fixedly connected with the aerogel pad (3) respectively.

7. The processing method of the new energy vehicle battery heat insulation plate structure according to any one of claims 1-6, characterized in that: The method comprises the following steps: Step I: fixing between the plate body (11) and the aerogel pad (3): install the aerogel pad (3) in the plate body (11), during the installation process, pay attention to that the edge of the aerogel pad (3) should be located in the plate body (11), and during the fixing process of the aerogel pad (3) and the plate body (11), first, bond the aerogel pad (3) and the plate body (11) with an adhesive, and then reinforce them by using the mechanical method of rivets, so as to realize the fixed connection of the aerogel pad (3) and the plate body (11) by using the combination of bonding and mechanical fixing; At the same time, the first frame plate (51) and the second frame plate (52) are connected with the aerogel pad (3) respectively, and the combination of bonding and mechanical fixing is also adopted to realize the fixing, and the installation positions of all the above-mentioned rivets are located at the edge positions, after the installation is completed, the plate body (11) and the aerogel pad (3) are punched at the same time, the punching position avoids contacting with the rivets, so as to prevent the damage to the stamping equipment, and to be used for the installation and positioning of the connecting piece (2) and the control mechanism (4); Step II: install the connecting piece (2) and the control mechanism (4) between the main plate (1): connect the connecting piece (2) and the control mechanism (4) with the plate body (11) on which the aerogel pad (3) is fixed, during the connection process, the connecting piece (2) is connected with the plate body (11) arranged on the two sides through the connecting hole (12) by the first cylinder (21) and the second cylinder (23) respectively, the first cylinder (21) and the second cylinder (23) are connected with the connecting hole (12) by interference fit, and during the connection process, the connecting hole (12) is coated with glue, the cylindrical rod (436) is connected with the plate body (11) on the two sides at the same time, and the connection between the cylindrical rod (436) and the plate body (11) on the two sides is realized by welding, so as to realize the positioning of the control mechanism (4); During the above-mentioned connection process, the first frame plate (51) and the second frame plate (52) are connected synchronously; Step III: extrusion test between main plates (1): after connection, the main plates (1) are extruded to test the stability of the connection between the main plates (1) and the installation stability of the connecting piece (2) and the control mechanism (4). During the test, each component inside the device that needs to be displaced should be able to move flexibly.

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